<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>活动列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <!-- 搜索与添加区域 -->
          <el-input placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userList" stripe>
        <el-table-column label="序号" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-tooltip class="item" effect="light" content="修改信息" placement="top-end" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            <!-- 删除按钮 -->
            <el-tooltip class="item" effect="light" content="删除角色" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            </el-tooltip>
            <!-- 分配角色 -->
            <el-tooltip class="item" effect="light" content="分配角色" placement="top-start" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>

        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email" type="email"></el-input>
        </el-form-item>

        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @closed="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
      </el-form>

      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
      </el-form>

      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="showRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.value" :label="item.roleName" :value="item.id"></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="showRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        return callback()
      }

      callback(new Error('输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        pagesize: 5
      },
      userList: [],
      total: 0,

      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,

      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },

      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '用户名的长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },

      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,

      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },

      // 控制分配角色对话框的显示与隐藏
      showRoleDialogVisible: false,

      // 需要被分配权限的用户信息
      userInfo: {},

      // 所有角色的数据列表
      rolesList: [],

      // 以选中的角色Id
      selectRoleId: ''
    }
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败!')
      }
      console.log(this.queryInfo)
      console.log(res)
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听Pagesize改变的事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.addDialogVisible = false
      if (
        this.addForm.username ||
        this.addForm.password ||
        this.addForm.email ||
        this.addForm.mobile
      ) {
        this.$confirm(
          '检测到未保存的内容，是否在取消操作前保存修改？',
          '确认信息',
          {
            distinguishCancelAndClose: true,
            confirmButtonText: '保存',
            cancelButtonText: '放弃修改'
          }
        )
          .then(() => {
            this.$message({
              type: 'info',
              message: '保存修改'
            })
          })
          .catch(action => {
            this.$message({
              type: 'info',
              message:
                action === 'cancel'
                  ? (this.$refs.addFormRef.resetFields(), '表格已重置')
                  : '表格已暂时保存'
            })
          })
      } else {
        this.$refs.addFormRef.resetFields()
      }
    },

    // 预校验
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) {
          return
        }
        // 可以发起请求
        const { data: res } = await this.$http.post('users', this.addForm)
        console.log(res)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        this.$refs.addFormRef.resetFields()
        this.addDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
      })
    },

    // 展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息出错了！')
      }
      this.editDialogVisible = true
      this.editForm = res.data
    },

    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },

    // 修改用户表单预验证并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功！')
      })
    },

    // 根据用户Id值删除用户
    removeUserById(id) {
      console.log(id)
      // 弹框询问用户
      this.$confirm('此操作将永久删除该用户，是否继续？', '提示', {
        distinguishCancelAndClose: true,
        confirmButtonText: '确认',
        cancelButtonText: '取消'
      })
        .then(async () => {
          const { data: res } = await this.$http.delete('users/' + id)
          if (res.meta.status !== 200) {
            this.$message.error('删除用户失败')
          }

          this.$message.success('删除用户成功')
          this.getUserList()
        })
        .catch(action => {
          this.$message({
            type: 'info',
            message: action === 'cancel' ? '取消删除' : '取消操作'
          })
        })
    },

    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 展示对话框之前获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表错误')
      }

      this.rolesList = res.data

      this.showRoleDialogVisible = true
    },

    // 点击角色分配按钮分配角色
    async saveRoleInfo() {
      if (!this.selectRoleId) {
        return this.$message.error('请选择一个角色')
      }

      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectRoleId
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败!')
      }

      this.$message.success('更新角色成功')
      this.getUserList()
      this.showRoleDialogVisible = false
    },

    // 分配角色框关闭重置
    setRoleDialogClosed() {
      this.selectRoleId = ''
      this.userInfo = {}
    }
  },
  created() {
    this.getUserList()
  }
}
</script>

<style lang="less" scoped>
.el-card {
  margin-top: 15px;
  max-height: 600px;
  overflow-y: auto;
}
</style>
